Refrigerator



FIG. 1 is a perspective view of a refrigerator, showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the figures are presented for the purpose of illustrating various portions of the refrigerator, and form no part of the claimed design. 

CLAIM The ornamental design for a refrigerator, as shown and described. 